M37281EKSP Datasheet, PDF (158/172 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

M37281MAH–XXXSP,M37281MFH–XXXSP,M37281MKH–XXXSP, M37281EKSP
Address 021516
OSD Control Register 2
b7 b6 b5 b4 b3 b2 b1 b0
OSD control register 2 (OC2) [Address 021516]
B
Name
Functions
After reset R W
0, 1 Display layer
selection bits
(OC20, OC21)
b1 b0
00
01
10
11
Layer 1
CC, OSD, CDOSD
CC, OSD
CC, CDOSD
CC
Layer 2
CDOSD
OSD
CDOSD
OSD
0
RW
2 R, G, B signal output 0: Digital output
(See note)
selection bit(OC22) 1: Analog output (4 gradations)
0
RW
3 Solid space output bit 0: OUT1 output
(OC23)
1: OUT2 output
0
RW
4 ^Horizotal
window/blank
coutrol bit (OC24)
5 Window/blank
selection bit 1
(horizontal) (OC25)
0: OFF
1: ON
0: Horizontal blank function
1: Horizontal window function
6 Window/blank
selection bit 2
(vertical) (OC26)
0: Vertical blank function
1: Vertical window function
7 OSD interrupt
0: At completion of layer 1 block display
request selection bit 1: At completion of layer 2 block display
(OC27)
0
RW
0
RW
0
RW
0
RW
Note: When setting bit 1 of the OSD port control register to “1,” the value which is
converted from the 4-adjustment-level analog to the 2-bit digital is output
regardless of this bit value as follows : the high-order bit (R1, G1 and B1) is
output from pins P52, P53 and P54, and the low-order bit is (R0, G0 and B0)
output from pins P17, P15 and P16. And besides, when not using OSD
function, the low-power dissipation can realize by setting this bit to “0.”
Rev.1.01 2003.07.16 page 158 of 170